HP Spectre x360 15t-eb000 charging with USB-C

[barv7]

Hey I have HP Spectre x360 15t-eb000 ,

It comes with a 135w charger that connects to round charger socket,

but also:

 1 Thunderbolt™ 3 (40Gbps signaling rate) with SuperSpeed USB Type-C® 10Gbps signaling rate (USB Power Delivery, DisplayPort™ 1.2, HP Sleep and Charge); 1 SuperSpeed USB Type-C® 10Gbps signaling rate (USB Power Delivery, DisplayPort™ 1.2, HP Sleep and Charge); ports,

I wonder if I can use one of the USB-C to charge it? and if its ok and wont harm the laptop, what W the USB-C charger needs to be ? 

I ask because I don't know If it will be bad for my  laptop battery or the laptop itself.

Thank you so much!

[banhien]

@barv7 

You are saying it supports USB Power Delivery on its USB-C port that means you can use a compatible USB-C charger to charge your machine. You would need 135W or above charger.

Regards.